[1]彭 瑾,董有福*.基于DEM脊点跟踪的山脊线编码与分级[J].山地学报,2017,(01):95-101.[doi:10.16089/j.cnki.1008-2786.000200]
　PENG Jin,DONG Youfu.A DEMs-Based Method for Ordering and Coding Ridge Lines by Tracing Ridge Grids[J].Mountain Research,2017,(01):95-101.[doi:10.16089/j.cnki.1008-2786.000200]
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基于DEM脊点跟踪的山脊线编码与分级()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2017年01期
页码:
95-101
栏目:
山地技术
出版日期:
2017-01-30

文章信息/Info

Title:
A DEMs-Based Method for Ordering and Coding Ridge Lines by Tracing Ridge Grids
文章编号:
1108-2786-(2017)1-95-07
作者:
彭 瑾;  董有福*
南京工业大学 测绘科学与技术学院,江苏 南京 211800
Author(s):
PENG Jin1;  DONG Youfu1
College of Geomatics Science and Technology, Nanjing Tech University, Nanjing 211800, China
关键词:
DEM; 山脊线; 特征线; 分级
Keywords:
DEM;  ridge lines;  feature lines;  order
分类号:
P931
DOI:
10.16089/j.cnki.1008-2786.000200
文献标志码:
A
摘要:
山脊线是构成地形骨架的主要地形特征线之一,它与沟谷线共同控制着地形整体走势。山脊表现为与沟谷类似的层次分支结构,但却不具备沟谷线水流方向明确的特性。本文在借鉴沟谷线分级思想基础上,提出一种基于DEM脊点跟踪的山脊线编码分级方法,通过修正流域边界线提取山脊线,找到各等级脊线起始点,搜索并编码出相应等级的完整山脊线。通过宜君和韭园沟两个小流域进行验证,并与流域边界最高级分级法对比。结果表明,本文编码方法可以有效反映出山脊线层次,山脊线等级划分相对细致,与同一阈值下沟谷线等级匹配性较好。该研究可为地形结构特征分析提供方法参考,为多尺度地形综合提供技术支撑。
Abstract:
Being one of key features constructing the terrain skeleton, ridge lines interworking with valley lines control the terrain movements on the whole. Despite being with many branches of different orders similar to valley lines, the ridge lines don't extend like the direction of valley lines which flow from high locations to low ones and converge to the outlet. Referring to the thought for classifying valley lines, a DEMs-based method for ordering and coding ridge lines was proposed to search and order them by extracting them from modified watershed boundary, finding the starting point of each ridge line being of different order, then searching and encoding each ridge segment with the starting point's order. Taking two watersheds named Yijun and Jiuyuangou as test areas and one existed algorithm ordering ridge lines named highest-level watershed boundary as comparison, the method presented in this paper was verified and evaluated. The results show that the method can describe the relationship of ridge lines with different orders clearly with more details and the ridge lines ordered by this method match the corresponding order valley lines extracted with same accumulation threshold value and ordered by Strahler approach very well. The research is helpful to analyze the terrain structure based on terrain features and construct multi-scale DEMs.

参考文献/References:

[1] 中国科学院“7.6”新疆叶城特大泥石流考察组. 叶城县柯克亚乡六村滑坡堰塞坝溃决泥石流灾害考察报告[R]. 2016.7. [Investigation team on Yecheng debris flow from CAS. Report on the emergency investigation of catastrophic debris flow in Yecheng County of Xinjiang on July 6th, 2016 [R]. 2016.7]
[2] CHEN N Sh, YANG Ch L, ZHOU W, et al. The critical rainfall characteristics for torrents and debris flow in the WenChuan earthquake stricken area[J]. Journal of Mountain Science, 2009, 6(4): 362-372
[3] CHEN N Sh, LU Y, ZHOU H B, et al. Combined impacts of antecedent earthquakes and droughts on hazardous debris flows[J]. Journal of mountain science, 2014, 11(6):1507-1520
[4] 周必凡, 李德基, 罗德富, 等. 泥石流防治指南[M]. 科学出版社, 1991:125-129 [ZHOU Bifan,LI Deji,LUO Defu,et al. Guide to prevention of debris flow [M]. Beijing:Science Press,1991:125-129 ]
[5] 陈光曦, 王继康, 王林海.泥石流防治[M]. 北京: 中国铁道出版社, 1983:151-162. [CHEN Guang Xi,WANG Ju Kang,WANG Lin Hai.The Prevention of debris flow [M]. Beijing:China Railway Publishing House Press, 1983: 151-162]
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备注/Memo

备注/Memo:
基金项目(Foundation item):国家自然科学基金项目(41101360)[National Natural Science Foundation of China(41101360)]
作者简介(Biography):彭瑾(1992-),女(汉族),硕士生,江苏南通,研究方向为数字地形分析与空间数据挖掘[PENG Jin(1992-), female, M.Sc. candidate, born in Nantong, Jiangsu Province, research on digital terrain analysis and spatial data mining] E-mail: pjin92@163.com
*通信作者(Corresponding author):董有福(1976-),男(汉族),博士,副教授,河南信阳,研究方向为数字地形分析与空间数据挖掘 [DONG Youfu(1976-), male, Ph.D., associate professor, born in Xinyang, Henan Province, research on digital terrain analysis and spatial data mining] E-mail: dongyoufu@163.com
更新日期/Last Update: 2017-01-30